HEAT SEALING METHOD AND EQUIPMENT

摘要

PROBLEM TO BE SOLVED: To obtain a method and equipment for heat sealing several times an identical part for ensuring sufficient seal strength without causing bad effect on a top player of a sheet even when it is a multiple layered or thick film heat fusing sheet. SOLUTION: This is a method for heat sealing a plurality of sheets by passing the same between a seal roll and a facing seal roll provided facing the seal roll. In this heat seal method, an identical seal part can be sealed several times by providing a plurality of seal rolls formed with a seal edge for one facing roll. This heat seal equipment is provided with a plurality of seal rolls (11-13) formed with a seal edge and one facing roll touching all of the seal rolls.